Multi-Panel Uplink Precoding for PAPR-Controlled MIMO Transmission
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Solution Overview
Problem
Existing wireless communication technologies face challenges in managing peak-to-average power ratio (PAPR) for multi-panel uplink transmissions, as precoding procedures designed for single-layer and single-antenna panel transmissions are inadequate for multi-panel operations.
Innovation Solution
Implementing a method for multi-panel uplink transmissions that includes receiving and applying precoding information, such as DMRS port configuration, MIMO precoding configuration, or quantity of layers, to enable efficient precoding across multiple antenna panels of a user equipment (UE).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transform precoding is applied to satisfy PAPR requirement for single antenna panel, then PAPR requirement is met, but multi-panel uplink transmissions cannot be supported
Solution Approach 1:
The patent segments the precoding process by applying transform precoding independently to each antenna panel's uplink transmission. This allows each panel to meet its PAPR requirement separately while enabling multi-panel operations, resolving the contradiction between PAPR satisfaction and multi-panel capability
Solution Approach 2:
The patent extends the precoding approach from single-panel to multi-panel by adding a panel dimension. Transform precoding is applied across multiple antenna panels simultaneously, allowing the system to maintain PAPR control while operating in the additional spatial dimension of multiple panels
2Reliability
If precoding is limited to single layer and single antenna panel, then PAPR requirement is satisfied, but transmission efficiency is reduced for multi-panel UEs
Solution Approach 1:
The patent segments the uplink transmission into independent precoding operations for each antenna panel, allowing transform precoding to be applied effectively to control PAPR while still enabling multi-panel transmissions to occur simultaneously, thus maintaining both PAPR control and transmission efficiency
Solution Approach 2:
The patent changes the application scope of transform precoding from single-panel to multi-panel operations. By modifying how the precoding parameter is applied across multiple panels, the system achieves both PAPR control and improved transmission efficiency for multi-panel UEs
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink control information indicating precoding information associated with a multi-panel uplink transmission, the precoding information including at least one of a demodulation reference signal port configuration associated with the multi-panel uplink transmission, a multiple-input multiple-output precoding configuration associated with the multi-panel uplink transmission, or a quantity of layers associated with the multi-panel uplink transmission. The UE may precode the multi-panel uplink transmission for transmission via a first antenna panel of the UE and a second antenna panel of the UE based at least in part on the precoding information. The UE may transmit, using the first antenna panel and the second antenna panel, the precoded multi-panel uplink transmission. Numerous other aspects are provided.